Veichi AC90 Manual page 66

AC90 TENSION CONTROL FREQUENCY INVERTER MANUAL
Daily checking
●
To avoid machine damage and to prolong life time, please check the following items everyday.
Items
Check if power supply meets the
Power supply requirement and whether there is
lack-phase.
Check whether it meets the table3-1
Surroundings
requirement.
Check whether the inverter or the motor
Cooling system heat or change color abnormally and cooling
fan working state.
Motor Check if there is abnormal vibration or noise.
Check whether output current is over the
Load rated value of the motor or the inverter and
has lasted for a period.
No operation under power connected state. Otherwise, there is danger of electric shock death. Before
operating, please cut all related equipments power, ensure that the main circuit DC current has dropped to
safe range. And please operate after 5 mins.
Periodic overhaul
●
Under normal state, one overhaul every 3 or 4 months is ok. Please confirm the actual overhaul period according to the
machine use condition and work circumstance while using the machine.
Main circuit
Items
Whole
Electric connection
Mechanical connection
semi-conductive
component
Electrolytic capacitor
Checking content
Checking content
Check insulated resistance;
Check circumstance.
Check whether the wire and
●
connector color changes, whether
there is disrepair, crack color change
or aging in insulated layer.
Check whether the connect terminals
●
are frayed, damaged or loose.
Earth checking.
●
Check if there is abnormal vibration
●
or noise or something is loose.
Check whether there is dust or
●
rubbish.
If there is obvious out change?
●
Whether there is liquid leak, color
●
change or crack. Whether the safety
valve outcrop, inflation, creak or
liquid leak.
BASIC OPERATION AND TRIAL RUN
Treat it as nameplate explains.
Make sure the problem and solve it.
Check whether it overload. Tighten screw.
Check whether cooling fan is dirty or stall
rotate.
Tighten machine and electric connection
and lubricate the machine components.
Make sure whether it overload and whether
the machine model is right.
Tighten and change bad component;
Clear and improve circumstance.
Change bad wire.
●
Fasten terminals and change bad
●
terminals.
Measure earth resistance and fasten
●
earth terminals.
Tighten, lubricate and change the bad
●
components.
Clean operation environment
●
Change damaged component
●
Change damaged component
●
61
Treatment
Treatment